I am giving you some i.p adrress and port. just make setting with airtelmms.com in your phone and select this and enjoy like paid gprs.
So below setting you can use also in pc to surf net and it is work in 2g and also 3g make setting with below information..
apn-airtelmms.com
Ip-59.165.14.39 Port-3128
Ip-203.92.44.228 Port-8080
Ip-95.31.2.114 Port-3128
Ip-119.246.16.130 port-8909
Ip-86.127.119.110 Port-3128
Ip-117.239.40.66 Port-8080
Ip-115.248.217.178 Port-3128
Ip-115.155.109.160 port-8909
Ip-59.165.14.39 Port-3128
Ip-203.92.44.228[1mbps] Port-8080
Ip-95.31.2.114 Port-3128
Ip-86.127.119.110[1mbps] Port-3128
Ip-117.239.40.66 Port- 8080
Ip-115.248.217.178[350kbps] Port-3128
Ip-122.155.13.135[260kbps] Port-3128
Ip-62.84.12.41[450kbps] Port-8080
Ip-195.34.179.164 Port- 3128
Ip-201.86.69.194 Port-3128